根号9/16-（-根号2）平方+根号2^-4_其他解答

根号9/16-（-根号2）平方+根号2^-4

人气：306 ℃　时间：2020-07-07 10:52:41

解答

(9^0.5)/16-（-(2^0.5))^2+(2^0.5)^(-4)
=3/16-2+1/(2^0.5)^4
=3/16-2+1/4
=(3-32+4)/16
=-20/16
=-1又(4/16)
=-1又(1/4)